Ultrasound diagnostic system and control method of ultrasound diagnostic system

ABSTRACT

An ultrasound diagnostic system ( 1 ) includes an ultrasound probe ( 2 ), a handheld type diagnostic apparatus main body ( 3 ), and a remote apparatus ( 4 ), the ultrasound probe ( 2 ) includes a position sensor ( 14 ) that detects a measurement position of the ultrasound probe ( 2 ), the diagnostic apparatus main body ( 3 ) includes an image generation unit ( 22 ) that generates an ultrasound image and a monitor ( 24 ), the remote apparatus ( 4 ) includes an organ detection unit ( 32 ) that detects an organ of a subject by analyzing the ultrasound image, a score of the measurement position with respect to an optimum position in a case of measuring the organ detected by the organ detection unit ( 32 ) by the ultrasound probe ( 2 ) is input to the remote apparatus ( 4 ) and is transmitted from the remote apparatus ( 4 ) to the diagnostic apparatus main body ( 3 ) to be displayed on the monitor ( 24 ).

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a Continuation of PCT International Application No. PCT/JP2021/011415 filed on Mar. 19, 2021, which claims priority under 35 U.S.C. § 119(a) to Japanese Patent Application No. 2020-142449 filed on Aug. 26, 2020. The above applications are hereby expressly incorporated by reference, in its entirety, into the present application.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to an ultrasound diagnostic system including a handheld type diagnostic apparatus main body and a control method of the ultrasound diagnostic system.

2. Description of the Related Art

In the related art, an organ in a subject has been measured by capturing an ultrasound image showing a tomographic plane of the subject using an ultrasound diagnostic apparatus. In capturing the ultrasound image, an ultrasound probe is used to transmit an ultrasonic beam into the subject and to receive an ultrasound echo reflected in the subject. As such an ultrasound probe, an ultrasound probe that transmits an ultrasonic beam into the subject in a state of being disposed on a body surface of the subject and an ultrasound probe, which is a so-called intracavitary probe, that transmits an ultrasonic beam into the subject in a state of being inserted into the subject are known. By moving the ultrasound probe to an appropriate measurement position on the body surface of the subject or in the subject, a measurer acquires an ultrasound image of a target organ in the subject and measures the organ.

As described above, it may be difficult for a measurer having a low skill level to dispose the ultrasound probe at an appropriate measurement position corresponding to the organ in the subject to be observed by the measurer. Therefore, for example, as disclosed in JP2004-16268A, an ultrasound diagnostic apparatus has been developed that supports a measurer in capturing an ultrasound image. In the ultrasound diagnostic apparatus of JP2004-16268A, an ultrasound image captured in advance by a skilled person and positional information of an ultrasound probe at the time when the ultrasound image is captured are displayed to the measurer.

SUMMARY OF THE INVENTION

By the way, a portable ultrasound diagnostic apparatus including a so-called handheld type diagnostic apparatus main body consisting of a thin computer such as a so-called tablet terminal and an ultrasound probe has been developed, and the portable ultrasound diagnostic apparatus may be used to perform measurement of the inside of the subject at a place away from a hospital such as a home nursing site. In a case where the measurement of the inside of the subject is performed at a place away from the hospital, a measurer having a low skill level in the ultrasound diagnostic apparatus may perform the measurement of the inside of the subject. Therefore, for example, it is conceivable to use the technique disclosed in JP2004-16268A, but in general, since a monitor provided in a handheld type diagnostic apparatus main body has a size smaller than that of a monitor provided in a so-called stationary type ultrasound diagnostic apparatus, there were cases that information for supporting the measurer in capturing the ultrasound image cannot be sufficiently displayed, and it is difficult for the measurer to smoothly perform the measurement.

Further, in recent years, there has been an increasing demand for not showing a subject an ultrasound image representing a tomographic plane in the subject. However, even though the technique disclosed in JP2004-16268A is used, it is difficult to support measuring the target organ in the subject without displaying an ultrasonic image representing a tomographic plane in the subject on a monitor.

The present invention has been made to solve such a problem in the related art, and an object thereof is to provide an ultrasound diagnostic system and a control method of the ultrasound diagnostic system with which a measurer can smoothly measure an organ in a subject using a handheld type diagnostic apparatus main body while preventing a captured ultrasound image from being seen by the subject.

An ultrasound diagnostic system according to an aspect of the present invention comprises an ultrasound probe; a handheld type diagnostic apparatus main body connected to the ultrasound probe; and a remote apparatus connected to the diagnostic apparatus main body, in which the ultrasound probe includes a position sensor that detects a measurement position by the ultrasound probe, the diagnostic apparatus main body includes an image generation unit that generates an ultrasound image of a subject by transmitting and receiving an ultrasonic beam using the ultrasound probe, and a monitor, the remote apparatus includes an organ detection unit that detects an organ of an imaged subject by analyzing the ultrasound image, and a score of the measurement position with respect to an optimum position in a case of measuring the organ detected by the organ detection unit by the ultrasound probe is input to the remote apparatus and is transmitted from the remote apparatus to the diagnostic apparatus main body to be displayed on the monitor.

The diagnostic apparatus main body may include a main body-side communication unit that transmits the ultrasound image generated by the image generation unit and the measurement position detected by the position sensor in a case of capturing the ultrasound image to the remote apparatus, and the remote apparatus may include a remote apparatus-side communication unit that transmits the score to the diagnostic apparatus main body.

Further, the ultrasound probe may be an intracavitary probe, and the main body-side communication unit may transmit the ultrasound image and the measurement position to the remote apparatus in a case where the intracavitary probe is connected to the diagnostic apparatus main body.

The diagnostic apparatus main body may display a schematic diagram of the organ detected by the organ detection unit on the monitor.

In addition, the diagnostic apparatus main body may display the measurement position detected by the position sensor on the monitor to be superimposed on the schematic diagram.

Here, the schematic diagram may consist of a reconstructed image acquired by pre-scanning the subject.

The remote apparatus may include a guide creation unit that creates a guide for moving the ultrasound probe from the measurement position to the optimum position, and the guide created by the guide creation unit may be transmitted from the remote apparatus to the diagnostic apparatus main body and displayed on the monitor.

In addition, the diagnostic apparatus main body may display the score on the monitor by color coding.

In addition, the diagnostic apparatus main body may include a mode selection unit that selects either a first mode in which the ultrasound image is displayed on the monitor or a second mode in which the schematic diagram and the score are displayed on the monitor.

A control method of an ultrasound diagnostic system according to another aspect of the present invention is control method of an ultrasound diagnostic system including an ultrasound probe, a handheld type diagnostic apparatus main body, and a remote apparatus, the control method comprising: detecting a measurement position by the ultrasound probe; generating an ultrasound image of a subject by transmitting and receiving an ultrasonic beam using the ultrasound probe in the diagnostic apparatus main body; detecting an organ of an imaged subject by analyzing the ultrasound image in the remote apparatus detects; transmitting a score of the measurement position with respect to an optimum position in a case of measuring the detected organ by the ultrasound probe from the remote apparatus to the diagnostic apparatus main body; and displaying the score on a monitor of the diagnostic apparatus main body.

According to the aspect of the present invention, the ultrasound diagnostic system comprises an ultrasound probe; a handheld type diagnostic apparatus main body connected to the ultrasound probe; and a remote apparatus connected to the diagnostic apparatus main body, in which the ultrasound probe includes a position sensor that detects a measurement position by the ultrasound probe, the diagnostic apparatus main body includes an image generation unit that generates an ultrasound image of a subject by transmitting and receiving an ultrasonic beam using the ultrasound probe, and a monitor, the remote apparatus includes an organ detection unit that detects an organ of an imaged subject by analyzing the ultrasound image, and a score of the measurement position with respect to an optimum position in a case of measuring the organ detected by the organ detection unit by the ultrasound probe is input to the remote apparatus and is transmitted from the remote apparatus to the diagnostic apparatus main body to be displayed on the monitor. Therefore, a measurer can smoothly measure the organ in the subject using the handheld type diagnostic apparatus body while preventing the captured ultrasound image from being seen by the subject.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram showing a configuration of an ultrasound diagnostic system according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a transmission/reception circuit in the first embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of an image generation unit in the first embodiment of the present invention.

FIG. 4 is a flowchart showing an operation of the ultrasound diagnostic system according to the first embodiment of the present invention.

FIG. 5 is a diagram showing an example of a monitor of a remote apparatus in which an ultrasound image and a schematic diagram of an organ are displayed in the first embodiment of the present invention.

FIG. 6 is a diagram showing an example of a monitor of a diagnostic apparatus main body in which a score and a guide are displayed in the first embodiment of the present invention.

FIG. 7 is a diagram showing an example of a probe selection button for a measurer to select a type of an ultrasound probe in the first embodiment of the present invention.

FIG. 8 is a diagram showing an example of a preset selection button for a measurer to select a measurement preset in the first embodiment of the present invention.

FIG. 9 is a diagram showing an example of a score mark representing a score by color coding in the first embodiment of the present invention.

FIG. 10 is a diagram showing an example of a meter representing the score in the first embodiment of the present invention.

FIG. 11 is a diagram showing an example of an image of an ultrasound probe and an arrow that are displayed in the first embodiment of the present invention.

FIG. 12 is a diagram showing another example of a probe mark displayed on the monitor of the remote apparatus in the first embodiment of the present invention.

FIG. 13 is a diagram showing a configuration of an ultrasound diagnostic system according to a second embodiment of the present invention.

FIG. 14 is a diagram showing an example of a score and a schematic diagram of an organ displayed on a monitor of a diagnostic apparatus main body in the second embodiment of the present invention.

FIG. 15 is a diagram showing an example of an ultrasound image displayed on the monitor of the diagnostic apparatus main body in the second embodiment of the present invention.

FIG. 16 is a diagram showing an example of a probe mark displayed on the monitor of the diagnostic apparatus main body in the second embodiment of the present invention.

FIG. 17 is a diagram showing another example of the probe mark displayed on the monitor of the diagnostic apparatus main body in the second embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

The explanation of configuration requirements described below is based on a representative embodiment of the present invention, but the present invention is not limited to such an embodiment.

In addition, in the present specification, numerical ranges represented by using “to” mean ranges including numerical values described before and after “to” as a lower limit value and an upper limit value.

In the present specification, “same” includes an error range generally allowed in the technical field.

First Embodiment

FIG. 1 shows a configuration of an ultrasound diagnostic system 1 according to a first embodiment of the present invention. The ultrasound diagnostic system 1 includes an ultrasound probe 2, a diagnostic apparatus main body 3, and a remote apparatus 4. The ultrasound probe 2 and the diagnostic apparatus main body 3 are connected to each other by wireless communication. The diagnostic apparatus main body 3 and the remote apparatus 4 are connected to each other via a network NW. The wireless communication or wired communication is used as a connection method between the diagnostic apparatus main body 3 and the network NW and a connection method between the remote apparatus 4 and the network NW.

The ultrasound probe 2 includes a transducer array 11, and a transmission/reception circuit 12 and a probe-side communication unit 13 are sequentially connected to the transducer array 11. Further, a position sensor 14 is attached to the ultrasound probe 2, and the position sensor 14 is connected to the probe-side communication unit 13. Further, a probe control unit 15 is connected to the transmission/reception circuit 12 and the probe-side communication unit 13.

The diagnostic apparatus main body 3 includes a main body-side communication unit 21, and an image generation unit 22, a display control unit 23, and a monitor 24 are sequentially connected to the main body-side communication unit 21. In addition, the display control unit 23 is connected to the main body-side communication unit 21.

The main body control unit 25 is connected to the main body-side communication unit 21, the image generation unit 22, and the display control unit 23. Further, an input device 26 is connected to the main body control unit 25.

In addition, the main body-side communication unit 21, the image generation unit 22, the display control unit 23, and the main body control unit 25 constitute a main body-side processor 27.

The remote apparatus 4 includes a remote apparatus-side communication unit 31, and an organ detection unit 32, a display control unit 33, and a guide creation unit 34 are connected to the remote apparatus-side communication unit 31. The organ detection unit 32 is connected to the display control unit 33 and the guide creation unit 34. Further, the guide creation unit 34 is connected to the remote apparatus-side communication unit 31. Further, a monitor 35 is connected to the display control unit 33.

Further, a remote apparatus control unit 36 is connected to the remote apparatus-side communication unit 31, the organ detection unit 32, the display control unit 33, and the guide creation unit 34. Further, an input device 37 is connected to the remote apparatus control unit 36.

Further, the remote apparatus-side communication unit 31, the organ detection unit 32, the display control unit 33, the guide creation unit 34, and the remote apparatus control unit 36 constitute a remote apparatus-side processor 38.

The transducer array 11 of the ultrasound probe 2 shown in FIG. 1 includes a plurality of transducers arranged one-dimensionally or two-dimensionally. Each of the transducers transmits ultrasonic waves in accordance with a drive signal supplied from the transmission/reception circuit 12, receives an ultrasound echo from the subject, and outputs a signal based on the ultrasound echo. Each transducer is constituted by forming electrodes at both ends of a piezoelectric body composed of, for example, a piezoelectric ceramic represented by lead zirconate titanate (PZT), a polymeric piezoelectric element represented by polyvinylidene difluoride (PVDF), and a piezoelectric single crystal represented by lead magnesium niobate-lead titanate (PMN-PT).

Under control of the probe control unit 15, the transmission/reception circuit 12 transmits ultrasonic waves from the transducer array 11 and generates a sound ray signal based on a reception signal acquired by the transducer array 11. As shown in FIG. 2 , the transmission/reception circuit 12 includes a pulser 41 connected to the transducer array 11, and an amplification unit 42, and an AD (Analog Digital) conversion unit 43, and a beam former 44 that are sequentially connected in series from the transducer array 11.

The pulser 41 includes, for example, a plurality of pulse generators, and supplies respective drive signals to a plurality of transducers of the transducer array 11 by adjusting a delay amount such that ultrasonic waves transmitted from the plurality of transducers form an ultrasonic beam based on a transmission delay pattern selected in response to a control signal from the probe control unit 15. In this way, in a case where a pulsed or continuous-wave voltage is applied to the electrodes of the transducers of the transducer array 11, the piezoelectric body expands and contracts, pulsed or continuous-wave ultrasonic waves are generated from the respective transducers, and the ultrasonic beam is formed from a composite wave of the ultrasonic waves.

The transmitted ultrasonic beam is reflected by, for example, a target such as a portion of a subject and propagates toward the transducer array 11 of the ultrasound probe 2. The ultrasound echo propagating toward the transducer array 11 in this way is received by each of the transducers constituting the transducer array 11. At this time, each of the transducers constituting the transducer array 11 expands and contracts by receiving the propagating ultrasound echo to generate reception signals which are electric signals, and outputs the reception signals to the amplification unit 42.

The amplification unit 42 amplifies the signals input from each of the transducers constituting the transducer array 11, and transmits the amplified signals to the AD conversion unit 43. The AD conversion unit 43 converts the signals transmitted from the amplification unit 42 into digital reception data and transmits the reception data to the beam former 44. The beam former 44 performs so-called reception focus processing by adding the respective reception data converted by the AD conversion unit 43 while giving delays thereof according to sound velocities or a distribution of the sound velocities set based on a reception delay pattern selected in response to the control signal from the probe control unit 15. By this reception focus processing, the respective reception data converted by the AD conversion unit 43 are phase-adjusted and added, and a sound ray signal in which the focus of the ultrasound echo is narrowed down is acquired.

The probe-side communication unit 13 includes an antenna for transmitting and receiving radio waves and the like, and performs wireless communication with the main body-side communication unit 21 of the diagnostic apparatus main body 3 under the control of the probe control unit 15. At this time, the probe-side communication unit 13 generates a transmission signal representing the sound ray signal by modulating a carrier based on the sound ray signal generated by the transmission/reception circuit 12 and wirelessly transmits the generated transmission signal to the main body-side communication unit 21 of the diagnostic apparatus main body 3.

As a modulation method of the carrier, for example, amplitude shift keying (ASK), phase shift keying (PSK), quadrature phase shift keying (QPSK), 16 quadrature amplitude modulation (16QAM) or the like is used.

The probe control unit 15 controls each unit of the ultrasound probe 2 based on a program stored in advance.

The position sensor 14 is attached to the ultrasound probe 2 and detects a measurement position of the ultrasound probe 2. The position sensor 14 can include, for example, a magnetic sensor, a gyro sensor, an acceleration sensor, or the like.

Further, although not shown, a battery that supplies power to each unit of the ultrasound probe 2 is built in the ultrasound probe 2.

The diagnostic apparatus main body 3 is a portable so-called handheld type device and is composed of, for example, a thin computer called a tablet type terminal.

The main body-side communication unit 21 of the diagnostic apparatus main body 3 includes an antenna for transmitting and receiving radio waves and the like as in the probe-side communication unit 13, and performs wireless communication with the probe-side communication unit 13 of the ultrasound probe 2 and communication with the remote apparatus-side communication unit 31 of the remote apparatus 4 via the network NW under the control of the main body control unit 25. The wireless communication or wired communication is used for connection between the main body-side communication unit 21 and the network NW

In a case of wireless communication with the probe-side communication unit 13, the main body-side communication unit 21 demodulates the transmission signal wirelessly transmitted from the probe-side communication unit 13 to obtain a sound ray signal. The main body-side communication unit 21 transmits the obtained sound ray signal to the image generation unit 22.

In addition, the main body-side communication unit 21 modulates the carrier based on control information for controlling the ultrasound probe 2, which is input by the measurer via the input device 26, to generate a transmission signal representing a control signal or the like and wirelessly transmits the generated transmission signal to the probe-side communication unit 13. As a modulation method of the carrier, for example, ASK, PSK, QPSK, 16QAM, or the like is used as in the modulation method used by the probe-side communication unit 13.

As shown in FIG. 3 , the image generation unit 22 has a configuration in which a signal processing unit 45, a digital scan converter (DSC) 46, and an image processing unit 47 are connected in series.

The signal processing unit 45 generates a B-mode image signal which is tomographic image information about a tissue in the subject by performing correction for attenuation by a distance according to a depth of a reflection position of the ultrasonic wave and then performing envelope detection processing, on the sound ray signal transmitted from the main body-side communication unit 21.

The DSC 46 converts (raster-converts) the B-mode image signal generated by the signal processing unit 45 into an image signal according to a normal television signal scanning method.

The image processing unit 47 performs various types of necessary image processing such as gradation processing on the B-mode image signal input from the DSC 46 and then transmits the B-mode image signal to the main body-side communication unit 21 or the display control unit 23 in response to a command by the main body control unit 25. Hereinafter, the B-mode image signal that has undergone image processing by the image processing unit 47 is simply referred to as an ultrasound image.

Under the control of the main body control unit 25, the display control unit 23 performs predetermined processing on the ultrasound image or the like generated by the image generation unit 22 and displays the ultrasound image or the like on the monitor 24.

The monitor 24 performs various displays under the control of the display control unit 23. The monitor 24 includes, for example, a display device such as a liquid crystal display (LCD) or an organic electroluminescence display.

The input device 26 is used for the measurer to perform an input operation and includes a touch panel disposed to be superimposed on the monitor 24, a button (not shown), a switch (not shown), and the like.

The main body control unit 25 controls each unit of the diagnostic apparatus main body 3 based on a control program stored in advance or the like.

Further, the main body-side processor 27 including the image generation unit 22, the display control unit 23, and the main body control unit 25 is configured of a central processing unit (CPU) and a control program for causing the CPU to perform various types of processing, but may be configured using a field programmable gate array (FPGA), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a graphics processing unit (GPU), or other integrated circuit (IC), or may be configured of a combination thereof.

In addition, the image generation unit 22, the display control unit 23, and the main body control unit 25 of the main body-side processor 27 can also be configured by being partially or wholly integrated into one CPU or the like.

The remote apparatus 4 is installed in, for example, a hospital or the like and is operated by an operator such as a doctor who is skilled in measuring the organ of the subject in order to support a measurer who measures the organ of the subject in a home nursing site or the like away from the hospital.

The remote apparatus-side communication unit 31 of the remote apparatus 4 includes an antenna for transmitting and receiving radio waves and the like as in the probe-side communication unit 13 and the main body-side communication unit 21 and performs communication with the main body-side communication unit 21 via the network NW. The wireless communication or wired communication is used for connection between the remote apparatus-side communication unit 31 and the network NW. The remote apparatus-side communication unit 31 receives from the main body-side communication unit 21 via the network NW, the ultrasound image generated by the image generation unit 22, instruction information for controlling the remote apparatus 4 generated by the main body control unit 25, and the like.

The organ detection unit 32 detects the organ of the subject reflected in the ultrasound image by analyzing the ultrasound image generated by the image generation unit 22. As a method of detecting the organ of the subject, the organ detection unit 32 can use, for example, a so-called deep learning method, a so-called template matching method, a machine learning method using support vector machine (SVM), adaboost, and the like, a machine learning method described in Csurka et al.: Visual Categorization with Bags of Keypoints, Proc. of ECCV Workshop on Statistical Learning in Computer Vision, pp. 59 -74 (2004), and the like.

Under the control of the remote apparatus control unit 36, the display control unit 33 displays the ultrasound image generated by the image generation unit 22 and information about the measurement position of the ultrasound probe 2 detected by the position sensor 14 and the like on the monitor 35 of the remote apparatus 4 after performing predetermined processing thereon.

The monitor 35 performs various displays under the control of the display control unit 33. Similarly to the monitor 24, the monitor 35 includes a display device such as an LCD or an organic EL display.

The guide creation unit 34 creates guide information for guiding a measurer to operate the ultrasound probe 2 by using an image of the organ of the subject detected by the organ detection unit 32 and the information about the measurement position of the ultrasound probe 2 detected by the position sensor 14. The guide information created by the guide creation unit 34 is displayed on the monitor 24 of the diagnostic apparatus main body 3 via the remote apparatus-side communication unit 31, the network NW, the main body-side communication unit 21, the image generation unit 22, and the display control unit 23.

The input device 37 is used for an operator of the remote apparatus 4 to perform an input operation, and can be configured to include a keyboard, a mouse, a track ball, a touch pad, a touch panel, and the like.

The remote apparatus control unit 36 controls each unit of the remote apparatus 4 based on a control program stored in advance or the like.

Further, the remote apparatus-side processor 38 including the remote apparatus-side communication unit 31, the organ detection unit 32, the display control unit 33, and the guide creation unit 34 is configured of a CPU and a control program for causing the CPU to perform various types of processing, but may be configured using an FPGA, a DSP, an ASIC, a GPU, or other ICs, or may be configured of a combination thereof.

In addition, the remote apparatus-side communication unit 31, the organ detection unit 32, the display control unit 33, and the guide creation unit 34 of the remote apparatus-side processor 38 can also be configured by being partially or wholly integrated into one CPU or the like.

In the following, a basic operation of the ultrasound diagnostic system 1 according to the first embodiment will be described in detail with reference to the flowchart shown in FIG. 4 .

Here, as general types of the ultrasound probe, an ultrasound probe for capturing an ultrasound image in a state of being disposed on the body surface of the subject and an ultrasound probe called an intracavitary probe for capturing an ultrasound image in a state of being inserted into the subject are known. In the following description of the operation, an example in which the ultrasound probe 2 according to the first embodiment of the present invention is an intracavitary probe will be described, but the same operation will be performed in a case of the ultrasound probe for capturing an ultrasound image in a state of being disposed on the body surface of the subject.

In addition, it is assumed that in a home nursing site or the like, a measurer measures the organ of the subject using the ultrasound probe 2 and the diagnostic apparatus main body 3, and at a remote location such as a hospital with respect to the position of the measurer, an operator such as a doctor who is skilled in measuring the organ of the subject operates the remote apparatus 4.

First, in step S1, the measurer inserts the ultrasound probe 2 into the subject and moves the ultrasound probe 2 to a measurement position for measuring a target organ. At this time, the position sensor 14 attached to the ultrasound probe 2 detects the measurement position of the ultrasound probe 2.

Next, in step S2, the ultrasound image is captured in a state where the ultrasound probe 2 is disposed at the measurement position detected in step S1. At this time, the ultrasonic beams are transmitted from the plurality of transducers of the transducer array 11 into the subject in accordance with the drive signal from the pulser 41 of the transmission/reception circuit 12, and the reception signal is output to the amplification unit 42 of the transmission/reception circuit 12 from each transducer that has received the ultrasound echo from the subject. The reception signals are amplified by the amplification unit 42, subjected to AD conversion by the AD conversion unit 43, and then phase-adjusted and added by the beam former 44 to generate the sound ray signal. The sound ray signal is wirelessly transmitted from the probe-side communication unit 13 to the main body-side communication unit 21 and transmitted to the image generation unit 22. The image generation unit 22 performs various types of processing on the sound ray signal to generate the ultrasound image.

The ultrasound image generated in this way is transmitted to the organ detection unit 32 and the display control unit 33 via the main body-side communication unit 21, the network NW, and the remote apparatus-side communication unit 31.

In step S3, the organ detection unit 32 detects the organ of the subject included in the ultrasound image by analyzing the ultrasound image generated in step S2. At this time, the organ detection unit 32 can detect the organ by using, for example, a deep learning method, a template matching method, a machine learning method using SVM, adaboost, or the like.

In step S4, as shown in FIG. 5 , the measurement position of the ultrasound probe 2 detected in step S1 and the ultrasound image U generated in step S2 are displayed on the monitor 35 of the remote apparatus 4. In the example of FIG. 5 , a probe mark M1 indicating a position of a front end part of the ultrasound probe 2 is displayed by being superimposed on a schematic diagram D of the organ of the subject detected in step S3, so that the measurement position of the ultrasound probe 2 detected in step S1 is shown.

At this time, for example, the remote apparatus control unit 36 can store schematic diagrams of a plurality of organs in advance and select the schematic diagram D of the organ of the subject detected in step S3 from the schematic diagrams of the plurality of organs, and further dispose the probe mark M1 at a position on the schematic diagram D corresponding to the measurement position based on the information about the measurement position detected in step S1.

In subsequent step S5, a score of the measurement position of the ultrasound probe 2 detected in step S1 with respect to an optimum position in a case of measuring the organ of the subject detected in step S3 using the ultrasound probe 2 is input by the operator via the input device 37 of the remote apparatus 4. At this time, the operator of the remote apparatus 4 determines how close the current measurement position of the ultrasound probe 2 is to the optimum position by observing the measurement position of the ultrasound probe 2 and the ultrasound image U displayed on the monitor 35 of the remote apparatus 4 in step S4 and inputs the score.

The score is an index indicating a degree of optimality of the measurement position of the ultrasound probe 2 where the ultrasound image U including the organ is captured in the measurement of the organ detected in step S3. For example, a larger score is input as the measurement position of the ultrasound probe 2 where the ultrasound image U including the organ detected in step S3 is captured is closer to the optimum position for measuring the organ, and a smaller score is input as the measurement position is farther from the optimum position.

In addition, for example, a numerical value can be input as the score. Further, for example, by assigning characters such as A, B, C, . . . in the order in which the measurement position is closer to the optimum position, these characters can be input as the score.

Information about the score input in this way is transmitted to the monitor 24 of the diagnostic apparatus main body 3 via the remote apparatus-side communication unit 31, the network NW, the main body-side communication unit 21, the image generation unit 22, and the display control unit 23.

In step S6, the guide creation unit 34 creates guide information for guiding the measurer to operate the ultrasound probe 2 by using information indicating the measurement position of the ultrasound probe 2 detected in step S1 and an image of the organ of the subject detected in step S3. For example, the guide creation unit 34 can create guide information for guiding the measurer on a direction in which the ultrasound probe 2 should be moved in order to more clearly depict the organ detected in step S3 in the ultrasound image U.

The guide information created in this way is transmitted to the monitor 24 via the remote apparatus-side communication unit 31, the network NW, the main body-side communication unit 21, the image generation unit 22, and the display control unit 23.

Finally, in step S7, as shown in FIG. 6 , a score S and a guide G1 are displayed on the monitor 24 of the diagnostic apparatus main body 3, based on the information about the score input in step S5 and the guide information created in step S6. In the example of FIG. 6 , a numerical value representing the score S and the guide G1 consisting of a text “MOVE PROBE TO LEFT” are displayed on the monitor 24. By moving the ultrasound probe 2 while checking the score S and the guide G1 displayed in this way, the measurer who measures the organ of the subject can dispose the ultrasound probe 2 at an optimum measurement position for measuring the target organ and capture the ultrasound image U.

Here, in general, there is a case where the measurement of the inside of the subject is performed at a place away from a hospital, such as in a home nursing site, by using the ultrasound diagnostic apparatus including the handheld type diagnostic apparatus main body and the ultrasound probe. As described above, in a case where the measurement of the inside of the subject is performed at a place away from the hospital, the measurement of the subject may not be smoothly performed because the measurer having a low skill level in the ultrasound diagnostic apparatus performs the measurement of the inside of the subject.

Further, in recent years, there has been an increasing demand for not showing a subject an ultrasound image representing a tomographic plane in the subject. In the ultrasound diagnostic apparatus in the related art, the measurer needs to dispose the ultrasound probe at the optimum measurement position for measuring a target site while checking the ultrasound image currently being captured and at that time, the ultrasound image may be seen by the subject.

According to the ultrasound diagnostic system 1 according to the first embodiment of the present invention, the score S of the measurement position of the ultrasound probe 2 with respect to the optimum position in a case of measuring the target organ by the ultrasound probe 2 can be input by a skilled operator such as a doctor, the input score S is displayed on the monitor 24, and the generated ultrasound image U is not displayed on the monitor 24, so that even a measurer having a low skill level can smoothly measure the target organ in the subject by using the handheld type diagnostic apparatus main body 3 while preventing the captured ultrasound image U from being seen by the subject.

In addition, as the ultrasound probe 2, instead of the intracavitary probe, an ultrasound probe for capturing the ultrasound image U in a state of being disposed on the body surface of the subject can be used. Even in this case, even a measurer having a low skill level can measure the target organ in the subject by using the handheld type diagnostic apparatus main body 3 while preventing the captured ultrasound image U from being seen by the subject. However, in a case where the intracavitary probe is used as the ultrasound probe 2, it is difficult for the measurer to directly check the front end part of the ultrasound probe 2 because the ultrasound probe 2 is inserted into the subject. Therefore, the present invention is more useful.

Therefore, for example, in a case where the main body control unit 25 determines that the intracavitary probe is used as the ultrasound probe 2, the information about the measurement position of the ultrasound probe 2 detected in step S1 and the ultrasound image U generated in step S2 can be transmitted to the remote apparatus 4. For example, as shown in FIG. 7 , the main body control unit 25 can also display the buttons B1, B2, and B3 for selecting the type of the ultrasound probe 2 on the monitor 24 and send commands to the main body-side communication unit 21 such that the information about the measurement position detected in step S1 and the ultrasound image U generated in step S2 are transmitted to the remote apparatus 4 in a case where the button B3 corresponding to the intracavitary probe is selected by the measurer via the input device 26.

In the example of FIG. 7 , a button B1 for selecting the “AAA (linear)” ultrasound probe, a button B2 for selecting the “BBB (convex)” ultrasound probe, and a button B3 for selecting the “CCC (vaginal)” ultrasound probe are displayed on the monitor 24. “AAA”, “BBB”, and “CCC” are identifiers of the ultrasound probe 2 such as a model number and a name of the ultrasound probe 2.

In addition, in a case where the main body control unit 25 determines that a preset for an examination using the intracavitary probe is selected, the body control unit 25 can also send commands to the main body-side communication unit 21 such that the information about the measurement position detected in step S1 and the ultrasound image U generated in step S2 are transmitted to the remote apparatus 4. Here, the preset is a set of preset conditions including imaging conditions such as a gain in a case of generating the ultrasound image U and image display conditions such as a contrast in a case of displaying the ultrasound image U, according to the type of examination such as an abdominal examination, a gynecological examination and an obstetric examination.

For example, as shown in FIG. 8 , the main body control unit 25 can also display a button B4 for selecting a preset for the abdomen, a button B5 for selecting a preset for the gynecology, and a button B6 for selecting a preset for the obstetrics on the monitor 24 and send commands to the main body-side communication unit 21 such that the information about the measurement position detected in step S1 and the ultrasound image U generated in step S2 are transmitted to the remote apparatus 4 in a case where the button B5 for selecting a preset for the gynecology that uses the intracavitary probe is selected by the measurer via the input device 26.

In addition, although an example in which the score S is displayed on the monitor 24 as a numerical value is described in step S7, the display method of the score S is not particularly limited to this.

For example, as shown in FIG. 9 , the main body control unit 25 can display the score mark R for indicating the score S in color on the monitor 24 and change a display color of the score mark R according to a value of the score S to display the score S on the monitor 24 by color coding. For example, the main body control unit 25 can assign blue, yellow, and red in the order in which the measurement position is closer to the optimum positions, and display the score mark R in blue, yellow, or red according to the input operation by the operator via the input device 37 of the remote apparatus 4.

In addition, the main body control unit 25 can also change a display color of an entirety of the monitor 24 of the diagnostic apparatus main body 3, that is, the background, instead of changing the color of the score mark R.

In addition, for example, as shown in FIG. 10 , the main body control unit 25 can also represent the score S by a meter P according to the input operation of the operator via the input device 37 of the remote apparatus 4. In the example of FIG. 9 , the meter P includes a needle portion Q and indicates that the score S is lower as the needle portion Q is disposed at a position closer to the left “BAD”, and the score S is higher as the needle portion Q is disposed at a position closer to the right “GOOD”.

Further, although it is described that the guide G1 consisting of the text “MOVE PROBE TO LEFT” is displayed on the monitor 24, the guide G1 may include not only the content with prompts to move the ultrasound probe 2 up and down or left and right but also the content with prompts to rotate the ultrasound probe 2 to a specific direction.

In addition, not limited to the display of the guide G1 consisting of the text on the monitor 24, for example, as shown in FIG. 11 , an image F1 representing the ultrasound probe 2 and an arrow F2 indicating a direction in which the ultrasound probe 2 should be rotated can also be displayed on the monitor 24 as a guide for the measurer. Although not shown, an arrow indicating a direction in which the ultrasound probe should be moved may be displayed on the monitor 24 instead of the arrow F2 indicating the direction in which the ultrasound probe 2 should be rotated.

In this way, the image F1 representing the ultrasound probe 2 and the arrow F2 indicating the direction in which the ultrasound probe 2 should be rotated or the direction in which the ultrasound probe 2 should be moved are displayed on the monitor 24, so that the measurer can more clearly understand the direction in which the ultrasound probe 2 should be rotated or moved.

Further, although the guide information is created in step S6 and the guide G1 based on the guide information is displayed on the monitor 24 in step S7, only the score S out of the score S and the guide G1 may be displayed on the monitor 24. Even in this case, the measurer can dispose the ultrasound probe 2 at the optimum measurement position for measuring the target site by moving the ultrasound probe 2 while checking the score S displayed on the monitor 24 of the diagnostic apparatus main body 3.

Further, as an example of displaying the measurement position of the ultrasound probe 2 detected in step S1 on the monitor 35 of the remote apparatus 4, it has been described that the probe mark M1 indicating the measurement position of the ultrasound probe 2 is superimposed on the schematic diagram D of the organ as shown in FIG. 5 , but the method of displaying the measurement position of the ultrasound probe 2 on the monitor 35 of the remote apparatus 4 is not particularly limited thereto.

For example, the remote apparatus control unit 36 can calculate an orientation of the ultrasound probe 2 with respect to the organ based on the measurement position of the ultrasound probe 2 detected in step S1 and the image of the organ detected in step S3, and superimpose an arrow-shaped probe mark M2 representing both the calculated orientation of the ultrasound probe 2 and the measurement position thereof on the schematic diagram D of the organ as shown in FIG. 12 . As a result, the operator of the remote apparatus 4 can easily understand the position and orientation of the ultrasound probe 2 with respect to the target organ and input a more accurate score S.

Here, for example, by attaching a magnetic sensor to each of the front end part and a rear end part of the ultrasound probe 2, the remote apparatus control unit 36 can also calculate a direction from a position of the rear end part of the ultrasound probe 2 toward a position of the front end part of the ultrasound probe 2 as the orientation of the ultrasound probe 2.

In addition, in a case where the position sensor 14 includes a gyro sensor, the orientation of the ultrasound probe 2 can be detected by using the gyro sensor.

In addition, a comment for supporting the measurer who measures the organ of the subject can also be input by the operator through the input device 37 of the remote apparatus 4, and the input comment can be displayed on the monitor 24 of the diagnostic apparatus main body 3. In this case, the main body control unit 25 can display the comment input by the operator on the monitor 24 in preference to the guide G1 created by the guide creation unit 34 by, for example, making the display color of the guide G1 lighter than the display color of the comment input by the operator.

Further, in a case where the comment is input by the operator of the remote apparatus 4 via the input device 37 of the remote apparatus 4 in a state in which the guide G1 is already displayed on the monitor 24 of the diagnostic apparatus main body 3, the main body control unit 25 can analyze the comment input by the operator and determine whether or not the comment is content that guides the operation of the ultrasound probe 2, such as “Move the ultrasound probe to the right”. In a case where it is determined that the comment input by the operator is the content that guides the operation of the ultrasound probe 2, for example, the main body control unit 25 can display the comment input by the operator on the monitor 24 of the diagnostic apparatus main body 3 instead of the guide G1.

The analysis of the comment input by the operator may be transmitted to the diagnostic apparatus main body 3A after being performed by the remote apparatus control unit 36 of the remote apparatus 4 or may be transmitted to the diagnostic apparatus main body 3A after being performed by a server apparatus (not shown).

In this way, it is possible to more accurately support the measurer by displaying the comment by the operator of the remote apparatus 4 on the monitor 24 of the diagnostic apparatus main body 3.

Further, it has been described that the remote apparatus control unit 36 stores the schematic diagrams D of a plurality of organs. However, for example, the diagnostic apparatus main body 3 can be provided with a memory (not shown) storing the schematic diagrams D of the plurality of organs and the schematic diagram D of the organ detected by the organ detection unit 32 can be displayed on the monitor 35 by a command from the remote apparatus control unit 36 via the main body-side communication unit 21, the network NW, the remote apparatus-side communication unit 31, and the display control unit 33. In addition, for example, a server apparatus (not shown) that stores the schematic diagrams D of a plurality of organs may be provided, and the schematic diagram D may be transmitted from the server apparatus to the remote apparatus 4.

In addition, the reconstructed image acquired by pre-scanning the subject may be used as the schematic diagram D of the organ. The pre-scanning is scanning performed to roughly check the status inside the subject using the ultrasound probe 2 used for the measurement before the measurement of the organ of the subject is performed. For example, the remote apparatus control unit 36 can generate the reconstructed image by generating three-dimensional voxel data of the target organ based on the captured ultrasound images U of a plurality of frames by using the technique disclosed in JP2002-209890A.

Second Embodiment

In the first embodiment, an example is shown in which a numerical value representing the score S and the guide G1 consisting of the text are displayed on the monitor 24. However, in order to prevent the ultrasound image U from being seen by the subject and to allow the measurer to perform the measurement more smoothly, the schematic diagram D of the organ currently being measured may be displayed on the monitor 24.

FIG. 13 shows a configuration of an ultrasound diagnostic system 1A according to the second embodiment. The ultrasound diagnostic system 1A includes a diagnostic apparatus main body 3A instead of the diagnostic apparatus main body 3 in the ultrasound diagnostic system 1 of the first embodiment shown in FIG. 1 .

In the diagnostic apparatus main body 3A, a mode selection unit 48 is added and a main body control unit 25A is provided in place of the main body control unit 25 in the diagnostic apparatus main body 3 according to the first embodiment. The mode selection unit 48 is connected to the main body control unit 25A and the input device 26. Further, a main body-side processor 27A including the mode selection unit 48 is configured instead of the main body-side processor 27.

The main body control unit 25 stores schematic diagrams of a plurality of organs, selects a schematic diagram of the organ detected by the organ detection unit 32 of the remote apparatus 4, and displays the schematic diagram D on the monitor 24 as shown in FIG. 13 . In FIG. 14 , the schematic diagram D of the uterus of the subject is displayed on the monitor 24 together with the score S.

By checking the schematic diagram D displayed on the monitor 24, the measurer can easily understand which organ the ultrasound image U is currently being captured.

In addition, the mode selection unit 48 selects either a first mode in which the ultrasound image U is displayed on the monitor 24 as shown in FIG. 15 or a second mode in which the schematic diagram D of the organ and the score S are displayed as shown in FIG. 14 , based on the input operation of the measurer via the input device 26 of the diagnostic apparatus main body 3A. For example, the mode selection unit 48 can select the first mode in a case where there is a low possibility that the ultrasound image U is seen by the subject and it is desired to check the ultrasound image U and can select the second mode in a case where there is a high possibility that the ultrasound image U is seen by the subject, based on the input operation of the measurer.

In addition, in the first mode, in addition to the ultrasound image U, operation icons J1 to J5 for performing an operation of the ultrasound diagnostic system 1A can be displayed on the monitor 24. For example, the operation icon J1 is used for switching an examination mode, the operation icon J2 is used for storing the ultrasound images U of a plurality of frames continuously generated within a fixed time period, the operation icon J3 is used for freeze-displaying the ultrasound image U on the monitor 24, the operation icon J4 is used for changing so-called gain and depth, and operation icon J5 is used for displaying a plurality of other operation icons (not shown) on the monitor 24.

As described above, according to the ultrasound diagnostic system 1A of the second embodiment of the present invention, the measurer can easily understand the organ currently being measured by checking the schematic diagram D of the organ displayed on the monitor 24. Therefore, the measurer can more smoothly measure the organ of the subject.

In addition, since the first mode in which the ultrasound image U is displayed and the second mode in which the schematic diagram D of the organ and the score S are displayed are switched by the input operation of the measurer via the input device 26, it is possible for the measurer to check the ultrasound image U while preventing the ultrasound image U from being seen by the subject, and thus the measurer can more smoothly measure the organ of the subject.

Although it has been described that the main body control unit 25A stores the schematic diagrams D of the plurality of organs, for example, the remote apparatus control unit 36 of the remote apparatus 4 may store the schematic diagrams D of the plurality of organs. In this case, for example, the schematic diagram D of the organ detected by the organ detection unit 32 can be displayed on the monitor 24 by a command from the main body control unit 25A via the remote apparatus-side communication unit 31, the network NW, and the main body-side communication unit 21, the image generation unit 22, and the display control unit 23 from the remote apparatus control unit 36.

In addition, the reconstructed image acquired by pre-scanning the subject may be used as the schematic diagram D of the organ. For example, the main body control unit 25A can generate the reconstructed image by generating three-dimensional voxel data of the target organ based on the captured ultrasound images U of a plurality of frames by using the technique disclosed in JP2002-209890A.

Further, for example, instead of generating the reconstructed image by the diagnostic apparatus main body 3A, the remote apparatus control unit 36 of the remote apparatus 4 may generate the reconstructed image.

In addition, the measurement position of the ultrasound probe 2 detected by the position sensor 14 can also be displayed on the monitor 24 by being superimposed on the schematic diagram D of the organ.

For example, as shown in FIG. 16 , the main body control unit 25A can superimpose the probe mark M1 indicating the position of the front end part of the ultrasound probe 2 on the schematic diagram D of the organ. As a result, the measurer can easily understand the position of the ultrasound probe 2 with respect to the target organ.

Further, at this time, the guide creation unit 34 can indicate a direction in which the ultrasound probe 2 should be moved in order to accurately measure the target organ by an arrow G2. By checking the arrow G2, the measurer can easily move the ultrasound probe 2 to the optimum measurement position for measuring the target organ.

In addition, for example, the main body control unit 25A can calculate an orientation of the ultrasound probe 2 with respect to the organ based on the image of the organ detected by the organ detection unit 32 and the measurement position of the ultrasound probe 2 detected by the position sensor 14 and superimpose an arrow-shaped probe mark M2 representing both the calculated orientation of the ultrasound probe 2 and the measurement position thereof on the schematic diagram D of the organ as shown in FIG. 17 .

In general, an orientation mark for allowing the measurer to understand a rotation direction of the ultrasound probe is often disposed on a side portion of the ultrasound probe. A rotation direction mark K can be displayed on the right side or the left side of the probe mark M2 in order to indicate whether the orientation mark is disposed on the left side or right side of the probe mark M2 disposed on the schematic diagram D.

At this time, for example, the main body control unit 25A can store which of both end parts of the ultrasound image U in a direction orthogonal to a depth direction corresponds to a disposition position of the orientation mark and can calculate the position of the rotation direction mark K disposed on the schematic diagram D by analyzing the ultrasound image U generated by the image generation unit 22.

Although a star-shaped rotation direction mark K is shown in FIG. 17 , the shape of the rotation direction mark K is not limited to this and may have any shape.

In this way, both the orientation of the ultrasound probe 2 and the measurement position thereof are indicated by the probe mark M2, so that the measurer can easily understand the position and orientation of the ultrasound probe 2 with respect to the target organ.

In addition, for example, by attaching the position sensor 14 to each of the front end part and a rear end part of the ultrasound probe 2, the main body control unit 25A can also calculate a direction from a position of the rear end part of the ultrasound probe 2 toward a position of the front end part of the ultrasound probe 2 as the orientation of the ultrasound probe 2.

In this way, in a case where the arrow-shaped probe mark M2 is superimposed on the schematic diagram D of the organ, the guide creation unit 34 can indicate a rotation direction in which the ultrasound probe 2 should be rotated in order to accurately measure the target organ by an arrow G3. By checking the arrow G3, the measurer can easily rotate the ultrasound probe 2 at an optimum angle for measuring the target organ.

Further, instead of displaying the probe mark M1 or M2 superimposed on the schematic diagram D, the image F1 of the ultrasound probe 2 as shown in FIG. 11 can also be displayed at a position on the schematic diagram D corresponding to the measurement position detected by the position sensor 14.

EXPLANATION OF REFERENCES

1, 1A: ultrasound diagnostic system

2: ultrasound probe

3, 3A: diagnostic apparatus main body

4: remote apparatus

11: transducer array

12: transmission/reception circuit

13: probe-side communication unit

14: position sensor

15: probe control unit

21: main body-side communication unit

22: image generation unit

23: display control unit

24, 35: monitor

25, 25A: main body control unit

26, 37: input device

27: main body-side processor

31: remote apparatus-side communication unit

32: organ detection unit

33: display control unit

34: guide creation unit

36: remote apparatus control unit

38: remote apparatus-side processor

41: pulser

42: amplification unit

43: AD conversion unit

44: beam former

45: signal processing unit

46: DSC

47: image processing unit

48: mode selection unit

B1 to B6: button

D: schematic diagram

F1: image

F2, G2, G3: arrow

G1: guide

J1 to J5: operation icon

K: rotation direction mark

M1, M2: probe mark

NW: network

P: meter

Q: needle portion

R: score mark

S: score

U: ultrasound image. 

What is claimed is:
 1. An ultrasound diagnostic system comprising: an ultrasound probe; a handheld type diagnostic apparatus main body connected to the ultrasound probe; and a remote apparatus connected to the diagnostic apparatus main body, wherein the ultrasound probe includes a position sensing device configured to detect a measurement position by the ultrasound probe, the diagnostic apparatus main body includes a main body-side processor configured to generate an ultrasound image of a subject by transmitting and receiving an ultrasonic beam using the ultrasound probe, and a monitor, the remote apparatus includes a remote apparatus-side processor configured to detect an organ of an imaged subject by analyzing the ultrasound image, and a score of the measurement position with respect to an optimum position in a case of measuring the organ detected by the remote apparatus-side processor by the ultrasound probe is input to the remote apparatus and is transmitted from the remote apparatus to the diagnostic apparatus main body to be displayed on the monitor.
 2. The ultrasound diagnostic system according to claim 1, wherein the main body-side processor is further configured to transmit the ultrasound image and the measurement position detected by the position sensing device to the remote apparatus, and the remote apparatus-side processor is further configured to transmit the score to the diagnostic apparatus main body.
 3. The ultrasound diagnostic system according to claim 2, wherein the ultrasound probe is an intracavitary probe, and the main body-side processor is further configured to transmit the ultrasound image and the measurement position to the remote apparatus once the intracavitary probe is connected to the diagnostic apparatus main body.
 4. The ultrasound diagnostic system according to claim 1, wherein the main body-side processor is further configured to display a schematic diagram of the organ which is on the monitor.
 5. The ultrasound diagnostic system according to claim 2, wherein the main body-side processor is further configured to display a schematic diagram of the organ which is on the monitor.
 6. The ultrasound diagnostic system according to claim 3, wherein the main body-side processor is further configured to display a schematic diagram of the organ which is on the monitor.
 7. The ultrasound diagnostic system according to claim 4, wherein the main body-side processor is further configured to display the measurement position detected by the position sensing device on the monitor to be superimposed on the schematic diagram.
 8. The ultrasound diagnostic system according to claim 5, wherein the main body-side processor is further configured to display the measurement position detected by the position sensing device on the monitor to be superimposed on the schematic diagram.
 9. The ultrasound diagnostic system according to claim 6, wherein the main body-side processor is further configured to display the measurement position detected by the position sensing device on the monitor to be superimposed on the schematic diagram.
 10. The ultrasound diagnostic system according to claim 4, wherein the schematic diagram consists of a reconstructed image acquired by pre-scanning the subject.
 11. The ultrasound diagnostic system according to claim 7, wherein the schematic diagram consists of a reconstructed image acquired by pre-scanning the subject.
 12. The ultrasound diagnostic system according to claim 1, wherein the remote apparatus-side processor is further configured to create a guide for moving the ultrasound probe from the measurement position to the optimum position, transmit the guide from the remote apparatus to the diagnostic apparatus main body, and display the guide on the monitor.
 13. The ultrasound diagnostic system according to claim 2, wherein the remote apparatus-side processor is further configured to create a guide for moving the ultrasound probe from the measurement position to the optimum position, transmit the guide from the remote apparatus to the diagnostic apparatus main body, and display the guide on the monitor.
 14. The ultrasound diagnostic system according to claim 3, wherein the remote apparatus-side processor is further configured to create a guide for moving the ultrasound probe from the measurement position to the optimum position, transmit the guide from the remote apparatus to the diagnostic apparatus main body, and display the guide on the monitor.
 15. The ultrasound diagnostic system according to claim 4, wherein the remote apparatus-side processor is further configured to create a guide for moving the ultrasound probe from the measurement position to the optimum position, transmit the guide from the remote apparatus to the diagnostic apparatus main body, and display the guide on the monitor.
 16. The ultrasound diagnostic system according to claim 1, wherein the main body-side processor is further configured to display the score on the monitor by color coding.
 17. The ultrasound diagnostic system according to claim 2, wherein the main body-side processor is further configured to display the score on the monitor by color coding.
 18. The ultrasound diagnostic system according to claim 3, wherein the main body-side processor is further configured to display the score on the monitor by color coding.
 19. The ultrasound diagnostic system according to claim 4, wherein the main body-side processor is further configured to select either a first mode in which the ultrasound image is displayed on the monitor or a second mode in which the schematic diagram and the score are displayed on the monitor.
 20. A control method of an ultrasound diagnostic system including an ultrasound probe, a handheld type diagnostic apparatus main body, and a remote apparatus, the control method comprising: detecting a measurement position by the ultrasound probe; generating an ultrasound image of a subject by transmitting and receiving an ultrasonic beam using the ultrasound probe in the diagnostic apparatus main body; detecting an organ of an imaged subject by analyzing the ultrasound image in the remote apparatus; transmitting a score of the measurement position with respect to an optimum position in a case of measuring the detected organ by the ultrasound probe from the remote apparatus to the diagnostic apparatus main body; and displaying the score on a monitor of the diagnostic apparatus main body. 